fix: replace from_utf8_unchecked with from_utf8_lossy in SqliteError#4202
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abonander merged 1 commit intolaunchbadge:mainfrom Apr 6, 2026
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sqlite3_errmsg() returns UTF-8 in practice but the spec does not guarantee it. Using from_utf8_unchecked is unsound if non-UTF-8 bytes are returned (e.g. from malformed schema element names). Closes launchbadge#4193
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Replace
from_utf8_uncheckedwithfrom_utf8_lossyinSqliteError::try_new().sqlite3_errmsg()can return non-UTF-8 bytes when schema element names contain invalid UTF (e.g. from a malicious or corrupted database file). The currentfrom_utf8_uncheckedcall is unsound in that case since it constructs an invalid RustString.from_utf8_lossyreplaces invalid sequences with U+FFFD, which preserves the error message while maintaining soundness. Thefrom_code()path usingsqlite3_errstr()is left as-is since SQLite documents that function as returning UTF-8.Closes #4193